CVE-2025-68237: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2025-68237DEBIAN-CVE-2025-68237
Published 16-12-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-68237 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 7.7% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 32 · Related 29
DLA-4436-1MGASA-2026-0017MGASA-2026-0018OPENSUSE-SU-2026:20145-1SUSE-SU-2026:0278-1SUSE-SU-2026:0281-1

Timeline

  1. 16-12-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: mtdchar: fix integer overflow in read/write ioctls The "req.start" and "req.len" variables are u64 values that come from the user at the start of the function. We mask away the high 32 bits of "req.len" so that's capped at U32_MAX but the "req.start" variable can go up to U64_MAX which means that the addition can still integer overflow. Use check_add_overflow() to fix this bug.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

0.00 pp

From 0.19% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu130 products
  • linux< 6.8.0-106.106 | < 6.17.0-19.19
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1050.53 | < 6.17.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.159-1 | < 6.12.63-1 | < 6.17.10-1
Linux1 product
  • linux≥ 6420ac0af95dbcb2fd8452e2d551ab50e1bbad83, < f37efdd97fd1ec3e0d0f1eec279c8279e28f981e | ≥ 6420ac0af95dbcb2fd8452e2d551ab50e1bbad83, < 457376c6fbf0c69326a9bf1f72416225f681192b | ≥ 6420ac0af95dbcb2fd8452e2d551ab50e1bbad83, < eb9361484814fb12f3b7544b33835ea67d7a6a97 | ≥ 6420ac0af95dbcb2fd8452e2d551ab50e1bbad83, < 37944f4f8199cd153fef74e95ca268020162f212 | ≥ 6420ac0af95dbcb2fd8452e2d551ab50e1bbad83, < e4185bed738da755b191aa3f2e16e8b48450e1b8 | 5.17

3 vendors · 132 products

References

26 links
Show all 26 references